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professional team delivering high-quality Dredging services

Dredging is the underwater excavation and removal of materials from the waterways like rivers, lakes and harbours, and from the ocean floors. The primary purpose is to deepen channels for navigation, but it’s also used for purposes like land reclamation, beach nourishment, environmental cleanup, and mining for commercial materials. The excavated sediment can then be transported and reused or disposed of elsewhere. 

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Pond Cleaning by Dragline Dredging

Dragline dredging is a method used for pond cleaning, particularly for larger or deeper ponds, where a large, long-reach excavator scoops sediment from the bottom and swings it to a discharge area. This mechanical method is effective for removing large volumes of material, but it can be disruptive to aquatic life and the environment, especially if the pond is drained first. 

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Seaside Dredging by Dragline Dredging

Seaside dredging is the underwater excavation of sand, silt, and sediment from the seabed, primarily to maintain navigable ports/channels for ships or to restore eroding beaches (beach nourishment), using powerful suction devices to move material for deepening waterways or adding it back to shorelines for coastal protection, involving specialised machinery like dredgers and pipelines. It also serves purposes like land reclamation, pipeline installation, and even harvesting marine life, balancing economic needs with environmental impacts.  

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Ruston-Bucyrus in River Sand Dredging

The primary method for using these machines in river or wet environments was the dragline attachment. A large digging bucket was suspended from a boom and dragged across the material to be excavated. The excavated material (sand, gravel, bauxite overburden) would then be deposited on the bank or into a waiting vessel.

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KPKR Agro & Marine Industries

HISTORY

FUNCTIONS OF RUSTON–BUCYRUS 22–RB

Known as the most sucessful crawler/crane, the Ruston-Bucyrus 22-RB was manufactured in Lincoln, England and over 10,000 units were built. It is a machine famous for working decades past its retirement date. Highly reliable in the 20-ton class. It could be converted into a crane, dragline, face shovel, skimmer, or pile driver.

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Gallery of the Ruston-Bucyrus 22–RB Machines

The 22-RB Drag Shovel is often use for quarrying and mining for small-scale material extraction and removing overburden (waste rock). Beyond digging, it could be repurposed for demolition tasks, such as clearing debris or, when equipped with specialized attachments like a wrecking ball, tearing down structures.

22-RB Drag Shovel



The 22-RB Dragline is used for excavation and mining for example surface mining and dredging works. It is also use for Civil Engineering and Infrastructure like road and port construction and pile driving.

22-RB Dragline

The 
Ruston-Bucyrus 22-RB is a well-known model of classic, rope-operated universal excavator that was widely used in the construction industry throughout the mid-to-late 20th century. It could be configured with various front-end attachments, including a dragline, lifting crane, face shovel, and the cable backhoe (also known as a dragshovel or hoe) requested. 

22-RB Cable Backhoe

Ruston-Bucyrus 22-RB, when equipped with a clamshell grab, is a specialized duty-cycle crane used for vertical excavation and bulk material handling. Its design allows it to perform tasks where a standard shovel or dragline might be less efficient, particularly in confined spaces or for deep vertical reaching.

22-RB Clamshell Grab